In-vehicle software distribution system, in-vehicle software distribution server, and in-vehicle software distribution method

An in-vehicle software distribution method of an in-vehicle software distribution system which controls updates to an identical function for in-vehicle systems of a plurality of vehicles,

• wherein the in-vehicle software distribution system comprises:
• an in-vehicle software distribution server which manages updates to the identical function by means of a campaign and distributes software remotely to vehicles targeted by the campaign based on the campaign;
• a terminal which performs I/Os to/from the in-vehicle software distribution server;
• and
• a software update apparatus which is mounted in each of the plurality of vehicles, downloads the software that has been distributed by the in-vehicle software distribution server, and installs the software in target in-vehicle systems,
• wherein the in-vehicle software distribution server comprises:
• a campaign creation step in which the in-vehicle software distribution server categorizes the campaign target vehicles into groups based on a predetermined criterion and creates a plurality of sub-campaigns which are subordinate to the campaign for each of the categorized groups;
• and
• a software distribution step in which the in-vehicle software distribution server distributes software remotely to vehicles targeted by the sub-campaigns based on the sub-campaigns, for each of the sub-campaigns.